Find the natural domain of the function 1)j(x)= square root 4-x^2 2)r(x)= 1/square root (x+2)(1-x) 3) Suppose that f(3)=7. A) what if anything does this statement imply about the natural domain of the function f? B) what if anything does this statement imply about the range of the function f? C) Could the rule for f be 2x+1? D)Could the rule for f be t^2-2? E) Could the rule for f be z^3-z^2? 4) Let j(x)= 2f(x). How are the graphs of f and j related? 5) sketch the graph of a function that is concave and increasing over the interval [-3,5]